<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>vue的响应式特性</title>
</head>

<body>
  <div class="box">{{msg+count}}</div>
  <script src="vue.js"></script>
  <script>
    const box = new Vue({
      el: '.box',
      data: {
        msg: "你好，黑马",
        count: 100
      }
    })
  </script>
</body>

</html>